Linear IgA disease is one of the rarer subepidermal blistering diseases. Linear IgA disease is a chronic, acquired, autoimmune blistering disease that is characterized by subepidermal blistering and linear deposition of IgA basement membrane antibodies. The disease affects both children and adults and, although there are some differences in their clinical presentations, there is considerable overlap with shared immunopathology and immunogenetics.
Definition
Linear IgA disease (LAD) is a chronic, acquired, autoimmune blistering disease. It is characterized by subepidermal blistering and linear deposition of immunoglobulin A (IgA) basement membrane antibodies. The disease affects both children and adults and, although there are some differences in their clinical presentations, there is considerable overlap with shared immunopathology and immunogenetics.